Web developers notes,programming tutorials.

Use RequiredFieldValidator and set the initial value to the default starting item in the list.         
<td>
        <asp:DropDownList ID=”ctype” runat=”server”>
        <asp:ListItem>Select Credit Card Type</asp:ListItem>
            <asp:ListItem>Visa</asp:ListItem>
            <asp:ListItem>Amex</asp:ListItem>
            <asp:ListItem>MasterCard</asp:ListItem>
            <asp:ListItem>Discover</asp:ListItem>
        </asp:DropDownList>
<asp:RequiredFieldValidator ID=”RequiredFieldValidator1″ runat=”server” ErrorMessage=”Please Select Card Type” ControlToValidate=”ctype” InitialValue=”Select Credit Card Type”>
</asp:RequiredFieldValidator>
</td> 

This entry was posted on Wednesday, March 26th, 2008 at 4:41 pm and is filed under dot net c# development. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.